Hello, I want to share what worked for me. I have windows 7 Professional and Avast antivirus.
After the uninstall antivirus guide failed I tried uninstalling the recent programs and updates, that didn't work either.
This is what worked:
Restart the computer and press F8 during start.
Select the first option "Repair Computer"
Select "Start up Repair" When done, the computer started normally like the error never happened. I restarted 3 more times to be sure. The problem was corrected by the start up repair.
Please let know if this worked for you and thanks for the support.